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Preparation method of permanently-antibacterial poly guanidine alginate fibers

A technology of seaweed fiber and polyguanidine, which is applied in the direction of fiber chemical characteristics, rayon manufacturing, alginate artificial filament, etc., can solve the problems of poor durability, inability to reuse, not resistant to washing, etc., and achieve good compatibility , Good environmental friendliness, high safety effect

Active Publication Date: 2014-06-04
QINGDAO UNIV
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to provide a preparation method of permanent antibacterial polyguanidine seaweed fiber, by introducing polymer antibacterial agent polyguanidine and light rare earth elements to modify seaweed fiber, so as to solve the problem of the antibacterial effect of functional seaweed fiber in the prior art The technical problems of poor durability, washing resistance and reusability, at the same time, strengthen the antibacterial performance of seaweed fiber, further improve the antibacterial effect of functional seaweed fiber, and enhance the application value of seaweed fiber

Method used

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  • Preparation method of permanently-antibacterial poly guanidine alginate fibers
  • Preparation method of permanently-antibacterial poly guanidine alginate fibers

Examples

Experimental program
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Effect test

Embodiment 1

[0037] (1) Synthesize polyguanidine mother liquor, control its polymerization degree n to be 15, contain polyguanidine 35Kg, when the temperature of the stock solution drops from 160°C to 80°C, add 650Kg of 10% sodium alginate solution dropwise under stirring, and react at a constant temperature of 45°C 60min.

[0038] (2) Following the step (1), add 0.077Kg of 3% mixed rare earth chloride dropwise, and react at a constant temperature of 30°C for 45min to obtain the spinning mother liquor.

[0039] (3) According to the existing wet spinning process: spinning, coagulation (adding 1.5% mixed rare earth chloride to the calcium chloride coagulation bath), stretching, the permanent antibacterial polyguanidine seaweed fiber can be obtained.

[0040] The antibacterial rate of the fiber to Staphylococcus aureus and Escherichia coli is 99.9%. After washing 100 times, the antibacterial rate still reaches 99%.

Embodiment 2

[0042] (1) Synthesize polyguanidine mother liquor, control its degree of polymerization n to 21, and contain polyguanidine 0.1Kg. When the temperature of the stock solution drops from 168°C to 60°C, gradually add 999Kg of 10% sodium alginate solution under stirring, and keep the temperature at 55°C React for 90 minutes.

[0043] (2) Following step (1), add 1.5 kg of 3% mixed rare earth nitrate dropwise, and react at a constant temperature of 32°C for 45 minutes to obtain the spinning mother liquor.

[0044] (3) According to the existing wet spinning process: spinning, coagulation (1.5% mixed rare earth chloride is added to the calcium chloride coagulation bath), stretching, and the permanent antibacterial polyguanidine seaweed fiber is obtained.

[0045] The antibacterial rate of the fiber to Staphylococcus aureus and Escherichia coli is 90%. After washing 100 times, the antibacterial rate still reaches 85%.

Embodiment 3

[0047] (1) Prepare 200Kg of 0.5% sodium alginate solution, add dropwise 0.44Kg of 25% polyguanidine solution with a degree of polymerization n of 17 under stirring, raise the temperature to 45°C, and react at constant temperature for 60min.

[0048] (2) Following step (1), add 0.37Kg of 3% mixed rare earth nitrate dropwise, and react at a constant temperature of 25°C for 45min to obtain the spinning mother liquor.

[0049] (3) According to the existing wet spinning process: spinning, coagulation (1.5% mixed rare earth chloride is added to the calcium chloride coagulation bath), stretching, and the permanent antibacterial polyguanidine seaweed fiber is obtained.

[0050] The antibacterial rate of the fiber to Staphylococcus aureus and Escherichia coli is 99%. After washing 100 times, the antibacterial rate still reaches 95%.

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Abstract

The invention discloses a preparation method of permanently-antibacterial poly guanidine alginate fibers. The preparation method comprises the following steps: reacting sodium alginate and high-molecular antibacterial agent poly guanidine, and then reacting the reaction product with mixed light-rare-earth elements to obtain high-molecular complex spinneret mother liquor; and finally, with a wet-process spinning process in the prior art, spinning, solidifying and stretching to prepare the permanently-antibacterial poly guanidine alginate fibers. The preparation method disclosed by the invention has the advantages that the high-molecular antibacterial agent poly guanidine and the light-rare-earth elements are introduced for modifying the alginate fibers, so that the technical problems of poor durability of an antibacterial effect, poor washing resistance and no repeatability of functional alginate fibers in the prior art are solved, and simultaneously, the antibacterial effect and the application value of the functional alginate fibers are further improved; the fibers disclosed by the invention not only have the permanent antibacterial and deodorizing function, but also have good static-resistant and flame-retardant functions, can be applied to the fields of military, medical care, home furnishing, home textiles and clothing and the like and have very wide market prospects.

Description

technical field [0001] The invention relates to a preparation method of antibacterial seaweed fiber, in particular to a preparation method of permanent antibacterial polyguanidine seaweed fiber. The permanent antibacterial functional polyguanidine seaweed fiber can be used to make non-woven fabrics and textiles. The subject classification codes are: D01F9 / 04, D01D5 / 06. Background technique [0002] Seaweed fiber and its fabric refer to the fiber material obtained by spinning process and the fabric obtained by pure spinning or blended spinning using sodium alginate, a natural polymer contained in seaweed, as a raw material. Seaweed fiber is derived from algae in the ocean and has good biodegradability and biocompatibility. It can usually be used as medical materials or textile and clothing materials. It has the function of extinguishing and ion exchange, so it can be used as a flame retardant material and a material for trapping heavy metal ions. my country is a large ocea...

Claims

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Application Information

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IPC IPC(8): D01F9/04D01F1/10
Inventor 李群夏延致吕洲赵昔慧王力平
Owner QINGDAO UNIV
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